Using LBZ injectors and pcm on detroit diesel

[LB72004]

how hard would it be to make your own ECM that only uses four injectors out of something like an arduino module? seems like the wiring and sensors, etc would be easy enough, it is the programming that seems like the biggest hurdle.

you would only need one crank or cam sensor but can wire both for redundancy if desired.

Use a PWM circuit and some SCRs fired by the arduino module to run the injectors. with the PWM you would be able to control the saturation point on the injector coils and turn them on and off with cheap high powered SCRs. minimal heat with maximum efficiency that could be build into a small package and programmed on your computer.

[DURAtotheMAX]

how hard would it be to make your own ECM that only uses four injectors out of something like an arduino module? seems like the wiring and sensors, etc would be easy enough, it is the programming that seems like the biggest hurdle.

you would only need one crank or cam sensor but can wire both for redundancy if desired.

Use a PWM circuit and some SCRs fired by the arduino module to run the injectors. with the PWM you would be able to control the saturation point on the injector coils and turn them on and off with cheap high powered SCRs. minimal heat with maximum efficiency that could be build into a small package and programmed on your computer.

IMO thats not realistic at all...

Think about it, you would literally be building a complete ECM and tuning from scratch, using an extremely basic hobbyist 8-bit microcontroller. In other words, you would be recreating/building something that GM has spent millions of dollars on, hundreds of thousands of man-hours on, and run using modern 32-bit RISC processors......

The timing and closed-loop monitoring control of getting a single-cylinder common-rail diesel engine to even at run/idle (let alone high RPM, different power/load settings, multiple cylinders, etc) with an arduino would be a pretty amazing feat in itself.

[LB72004]

well, here is a few examples of people that have actually done it

https://www.youtube.com/watch?v=r_Xhwcqrcy8

http://blog.atmel.com/2014/02/25/ard...iesel-engines/

http://www.reddit.com/r/arduino/comm..._and_ignition/

obviously the programming would need to be tweaked but it is not a insurmountable million dollar life long project. of course it is not the perfect solution it was just another thought to keep the ideas going.

[DURAtotheMAX]

well, here is a few examples of people that have actually done it

https://www.youtube.com/watch?v=r_Xhwcqrcy8

http://blog.atmel.com/2014/02/25/ard...iesel-engines/

http://www.reddit.com/r/arduino/comm..._and_ignition/

obviously the programming would need to be tweaked but it is not a insurmountable million dollar life long project. of course it is not the perfect solution it was just another thought to keep the ideas going.

Yes, I've seen those before...but none of them are common rail Diesel engines. And none of them are multiple cylinder engines (the tdi doesn't count, because the VP37 pump does all of the hard work, the Arduino is just giving it a throttle signal).

The power supply alone for a 4 cylinder common rail diesel would take some thinking. The lbz/LMM ECM has a fairly complex power supply in that it actually uses the flyback from the closing injector solenoids to charge the cap bank for the next combustion event, and lots of other trickery as well. At idle when the injectors only have about 400uS of on time, that requires a fair amount of precision/timing and processor speed to handle.

jmo.

Ben

[schwoch1]

It seems the more I look into this, the less feasible this is becoming.... :(
Any systems out there that may work better possibly that have the tuning capability that the Duramax's have?

Just curious!
Mike